Sarah, i think this is fantastic! I already do this with my brother's kids - when they're at our house, and DH or myself do something wrong, i mention that it's wrong and get them to go crook at whoever it is (usually DH saying norti words or forgetting his manners) and make sure there is an apology. i'm a stickler for manners, and as much as it sounds like i'm bring grouchy, i won't do anything for DH without him using his manners even when we're home alone!

I think consistency is key to helping kids growing up knowing what is expected of them - and giving them the confidence to stand up for what they've been taught

WTG Zander - what a fantastic attitude and level of confidence to pick up on adults doing the wrong thing and telling them how it is!